linux-kernel - Re: [PATCH] macintosh/mediabay: Convert to kthread API.

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Message-Id: <1177059118.6080.1.camel@localhost.localdomain>
Date:	Fri, 20 Apr 2007 18:51:58 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	containers@...ts.osdl.org, Oleg Nesterov <oleg@...sign.ru>,
	Christoph Hellwig <hch@...radead.org>,
	linux-kernel@...r.kernel.org, Paul Mackerras <paulus@...ba.org>
Subject: Re: [PATCH] macintosh/mediabay: Convert to kthread API.


> Looks OK - there's no way of stopping the kernel thread anyway.
> 
> It appears that nobody has tried to use this driver at the same time as
> software-suspend.  At least, not successfully.  A strategic try_to_freeze()
> should fix it.
> 
> This will become (a little) more serious when cpu hotplug is switched to
> use the process freezer, and perhaps it breaks kprobes already.

I'll dig a box with that hardware and do some tests, but it looks nice.

Thanks Eric !

There should be no problem with cpu hotplug, the only machines using the
media bay driver are old Apple laptops with only one CPU and no HW
threads.

Ben.


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